Suppose you see a bird walking around in a farm yard. This bird has no label that says ‘duck’. But the bird certainly looks like a duck. Also, he goes to the pond and you notice that he swims like a duck. Then he opens his beak and quacks like a duck. Well, by this time you have probably reached the conclusion that the bird is a duck, whether he’s wearing a label or not.
~Richard Cunningham Patterson Jr., United States ambassador to Guatemala during the Cold War in 1950
Are you familiar with the Duck Test? It’s an inductive reasoning test. This familiar expression is an example of inductive reasoning:
If it looks like a duck, swims like a duck, and…
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